$ git clone -n https://src.fedoraproject.org/rpms/rust-libudev-sys.git /var/lib/mock/f45-build-43014-799/root/chroot_tmpdir/scmroot/rust-libudev-sys
Cloning into '/var/lib/mock/f45-build-43014-799/root/chroot_tmpdir/scmroot/rust-libudev-sys'...
$ git fetch origin 046c754c77488508855a1eb3a157fd10e2c0c16e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libudev-sys
 * [new ref]         046c754c77488508855a1eb3a157fd10e2c0c16e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 046c754 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild